This community seems like an appropriate place to share approaches to threat modelling, so I thought I’d share an open source tool called threatware that I created to help validate and manage threat models. I wrote a longer blog post discussing the origin of it, but this community might find some of the design decisions I made when I created the (suggested) process and tool - see An Opinionated Approach - as relevant discussion topics for challenges we all face when operating a threat modelling program of work.
Hope you find it interesting, maybe even useful. Happy to discuss.